Pingspam

This is a backport of 1.3.1+1.18.2 to 1.18.1.

• Data is now saved in a persistent state instead of in the players' playerdatas
• The group command was redesigned, it is /pingspam group <group> <add|list|remove> [player] now.
• /pingspam now shows notifications
• Fix version predicates in OneDataStore